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<ul id="index">
  <li><a href="#NAME">NAME</a></li>
  <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
  <li><a href="#DESCRIPTION">DESCRIPTION</a>
    <ul>
      <li><a href="#General">General</a></li>
      <li><a href="#URI-schemes-and-loaders">URI schemes and loaders</a></li>
      <li><a href="#UI_METHOD-and-pass-phrases">UI_METHOD and pass phrases</a></li>
    </ul>
  </li>
  <li><a href="#EXAMPLES">EXAMPLES</a>
    <ul>
      <li><a href="#A-generic-call">A generic call</a></li>
    </ul>
  </li>
  <li><a href="#SEE-ALSO">SEE ALSO</a></li>
  <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
</ul>

<h1 id="NAME">NAME</h1>

<p>ossl_store - Store retrieval functions</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<p>#include &lt;openssl/store.h&gt;</p>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<h2 id="General">General</h2>

<p>A STORE is a layer of functionality to retrieve a number of supported objects from a repository of any kind, addressable as a file name or as a URI.</p>

<p>The functionality supports the pattern &quot;open a channel to the repository&quot;, &quot;loop and retrieve one object at a time&quot;, and &quot;finish up by closing the channel&quot;.</p>

<p>The retrieved objects are returned as a wrapper type <b>OSSL_STORE_INFO</b>, from which an OpenSSL type can be retrieved.</p>

<h2 id="URI-schemes-and-loaders">URI schemes and loaders</h2>

<p>Support for a URI scheme is called a STORE &quot;loader&quot;, and can be added dynamically from the calling application or from a loadable engine.</p>

<p>Support for the &#39;file&#39; scheme is built into <code>libcrypto</code>. See <a href="../man7/ossl_store-file.html">ossl_store-file(7)</a> for more information.</p>

<h2 id="UI_METHOD-and-pass-phrases">UI_METHOD and pass phrases</h2>

<p>The <b>OSS_STORE</b> API does nothing to enforce any specific format or encoding on the pass phrase that the <b>UI_METHOD</b> provides. However, the pass phrase is expected to be UTF-8 encoded. The result of any other encoding is undefined.</p>

<h1 id="EXAMPLES">EXAMPLES</h1>

<h2 id="A-generic-call">A generic call</h2>

<pre><code> <span class="variable">OSSL_STORE_CTX</span> <span class="variable">*ctx</span> <span class="operator">=</span> <span class="variable">OSSL_STORE_open</span><span class="operator">(</span><span class="string">"file:/foo/bar/data.pem"</span><span class="operator">);</span>
 
 <span class="regex">/*
  * OSSL_STORE_eof() simulates file semantics for any repository to signal
  * that no more data can be expected
  */</span>
 <span class="keyword">while</span> <span class="operator">(!</span><span class="variable">OSSL_STORE_eof</span><span class="operator">(</span><span class="variable">ctx</span><span class="operator">))</span> <span class="operator">{</span>
     <span class="variable">OSSL_STORE_INFO</span> <span class="variable">*info</span> <span class="operator">=</span> <span class="variable">OSSL_STORE_load</span><span class="operator">(</span><span class="variable">ctx</span><span class="operator">);</span>
 
     <span class="regex">/*
      * Do whatever is necessary with the OSSL_STORE_INFO,
      * here just one example
      */</span>
     <span class="variable">switch</span> <span class="operator">(</span><span class="variable">OSSL_STORE_INFO_get_type</span><span class="operator">(</span><span class="variable">info</span><span class="operator">))</span> <span class="operator">{</span>
     <span class="variable">case</span> <span class="variable">OSSL_STORE_INFO_X509</span><span class="operator">:</span>
         <span class="regex">/* Print the X.509 certificate text */</span>
         <span class="variable">X509_print_fp</span><span class="operator">(</span><span class="variable">stdout</span><span class="operator">,</span> <span class="variable">OSSL_STORE_INFO_get0_CERT</span><span class="operator">(</span><span class="variable">info</span><span class="operator">));</span>
         <span class="regex">/* Print the X.509 certificate PEM output */</span>
         <span class="variable">PEM_write_X509</span><span class="operator">(</span><span class="variable">stdout</span><span class="operator">,</span> <span class="variable">OSSL_STORE_INFO_get0_CERT</span><span class="operator">(</span><span class="variable">info</span><span class="operator">));</span>
         <span class="keyword">break</span><span class="operator">;</span>
     <span class="operator">}</span>
 <span class="operator">}</span>
 
 <span class="variable">OSSL_STORE_close</span><span class="operator">(</span><span class="variable">ctx</span><span class="operator">);</span>
</code></pre>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man3/OSSL_STORE_INFO.html">OSSL_STORE_INFO(3)</a>, <a href="../man3/OSSL_STORE_LOADER.html">OSSL_STORE_LOADER(3)</a>, <a href="../man3/OSSL_STORE_open.html">OSSL_STORE_open(3)</a>, <a href="../man3/OSSL_STORE_expect.html">OSSL_STORE_expect(3)</a>, <a href="../man3/OSSL_STORE_SEARCH.html">OSSL_STORE_SEARCH(3)</a></p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the OpenSSL license (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>


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